As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33407) AT THE DOOR 5L FOUND LOW CAPACITY . REPLACED THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK M33407 AT THE DOOR 5L AND CARRIED OUT INSTALLATION TEST, THE TEST RESULT WAS NORMAL REF AMM 33-51-06-960-802 REV.106.